Unfortunately, SLC caching means the math isn't quite that simple anymore. I would guess that this flash is probably rated for something in the 1500-3000 cycle

Unfortunately, SLC caching means the math isn't quite that simple anymore. I would guess that this flash is probably rated for something in the 1500-3000 cycle range, and the difference between that and the apparent 500 cycle drive endurance rating comes down to a combination of a conservative warranty period, and estimated write amplification during typical usage.